Miller Bobcat 250 Owner's Manual page 64

12-2. Electrode And Amperage Selection Chart
3/32
1/8
6010
5/32
&
3/16
6011
7/32
1/4
1/16
5/64
3/32
1/8
6013
5/32
3/16
7/32
1/4
3/32
1/8
5/32
7014
3/16
7/32
1/4
3/32
1/8
5/32
7018
3/16
7/32
1/4
3/32
1/8
5/32
7024
3/16
7/32
1/4
3/32
1/8
Ni-Cl
5/32
3/16
3/32
1/8
308L
5/32
12-3. Striking An Arc
OM-249336 Page 60
1
2
3
1
2
3
6010 EP ALL DEEP
MIN. PREP, ROUGH
6011 EP ALL DEEP
6013 EP,EN ALL LOW
7014 EP,EN ALL MED
LOW HYDROGEN,
MED
7018 EP ALL
FLAT
7024 EP,EN LOW
HORIZ*
NI-CL EP ALL LOW
308L EP ALL LOW
*EP = ELECTRODE POSITIVE (REVERSE POLARITY)
EN = ELECTRODE NEGATIVE (STRAIGHT POLARITY)
Weld current starts when electrode
touches workpiece.
1 Electrode
2 Workpiece
3 Arc
Scratch Technique
Drag electrode across workpiece like striking
a match; lift electrode slightly after touching
work. If arc goes out, electrode was lifted too
high. If electrode sticks to workpiece, use a
quick twist to free it.
Tapping Technique
Bring electrode straight down to workpiece;
then lift slightly to start arc. If arc goes out,
electrode was lifted too high. If electrode
sticks to workpiece, use a quick twist to free
it.
HIGH SPATTER
GENERAL
SMOOTH, EASY,
FAST
STRONG
SMOOTH, EASY,
FASTER
CAST IRON
STAINLESS